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Details for Patent: 6,159,458

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Patent 6,159,458 protects AZASITE and is included in one NDA. There has been one Paragraph IV challenge on Azasite. There are three tentative approvals for the compound protected by this patent. Additional details are available via the generic ingredient links below.

This patent has eleven patent family members in twelve countries.

Summary for Patent: 6,159,458

Title: Sustained release ophthalmic compositions containing water soluble medicaments
Abstract:An ophthalmic composition that provides sustained release of a water soluble medicament is formed comprising a crosslinked carboxy-containing polymer, a medicament, a sugar and water. The composition has a pH of at least 6.7 but a viscosity of from about 1000 to 5000 cps.
Inventor(s): Bowman; Lyle M. (Pleasanton, CA), Pfeiffer; James F. (Oakland, CA)
Assignee: InSite Vision (Alameda, CA)
Application Number:08/963,815
Patent Claim Types:
see list of patent claims
Composition; Use;
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 13th percentile
Forward Citations: 3rd percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Oak Pharms Inc
AZASITE
azithromycin
SOLUTION/DROPS;OPHTHALMIC050810-001Apr 27, 2007RXYes6,159,458► subscribeY METHOD OF COMBATING BACTERIA IN A PATIENT
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International Patent Family for Patent: 6,159,458

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria213405► subscribe
Australia1303699► subscribe
Australia745339► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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